Electric horn.



1). P. PERRY. ELECTRIC HORN. APPLIOATION Hmm' Jnr.27,\19o6.

Patented Dec. 22, 1908.

2 SHEETS-SHEET 1.

D, P.1 BRRY. ELECTRIC HORN.

APPLICATION FILED IAN. 27, 1906.

vPatented Dec. 22, 1908. 2 SHEETS-SHEET 2.

DAVID P. PERRY, OF CHICAGO, ILLINOIS.

ELECTRIC HORN.

Specification of Letters Patent.

Application filed January 27, 1906. Serial No. 298,117. g

Patented Dec. 22, 1908.

To lall whom 'it 'may concern: f

IBe it known that I, DAvin I). PERRY, a citizen of the United States of America, and resident of Chicago, Illinois, have invented a certain new and useful Improvement in Electric Horns, of which the following is a specification.

fMy invention contemplates an improvement on the electric horn disclosed in my prior application Serial No. 285,7 66 iiled November31905.

Generally stated, the object of my present invention is to provide an improved' and highly eiiicient electric horn.

Special objects of my present invention are the provision of means for protecting the sound-producing diaphra against moisture, dust and the like, which might enter the mouth of the horn; the provision of an improved construction and arrangement for operating the sound-producing diaphragm; the provision of an improvedconstruction and arrangement for clamping andv holding the sound-producing diaphragm and other parts in place; and the provision of certain details and features of improvement tending to increase the general eiliciency and effectiveness of a device of this particular character.

To the foregoing and other useful. ends, my invention consists in matters hereinafter set forth andclaimed.

In the accompanying drawings, Figure 1 is a longitudinal section of an electric horn embodying the principles of Vmy invention. Fig. 2 is a detail of one tl. diaphragm clamping rings. Fig. 3 is a'detail view of the inner or back surface ofthe metal sound-producing diaphragm. Fig. 4 is a detail sectional view of a portion of the electro-magnetic. mechanism for operating the diaphragm, and is a section on line 4-4 in Fig. 5. Fig. 5 is a detail section on line 5-5 in Fig. 1. Fig. 6 is a cross-section on line 6-6 in Fi 1. Fig. 7 is a cross-section on line 7-7 in Fig. 1. Fig. 8 is a horizontal detail section on line 8 8 in F ig. 1. Fig. 9 is a detail section on line 9-9 in Fig. 6. Fig. 1 0 is a top plan view of the electro-magnets and. associated parts shown in Figs. A1 'and 6.

As thus illustrated; my invention coini s a resonator A made of sheet-metal and ias sied into the end of the coupling ring a. Said coupling rin is provided with a threadedrear portion a apted to screw into the 1nternally and externally threaded diaphragm supporting-ring B. This ring B has a shoulder b against which the sound-producing diaphragm C is clamped or held, this diaphragm being provided at its .edge with rubber or other insulating material c, and at its center With a metallic reinforce or disk-like portion c. The main sound-producing diaphragm is held in place by an intermediate or separating ring D, an auxiliary diaphragm E, and a clamping ring F, arranged vin the order speciiied.. Thus it will be seenthat the two diaphragme are slightly separated from each other, and that the three elements, namely the diaphragme and the separating ring, are all clamped in place by the peripherally threaded clamping ring F, which latter is screwed into the threaded bore of the ring B. This auxiliary diaphragm` E has its edges provided With rubber or other insulati ig' material e, and is preferably composed of mica or other suitable material. In this way, the vibrations produced by the nietallil diaphragm C are `modiiied by the auxiliary diapliragnn-.that is to say, the tone is softened and rendered more pleasing to the e. r. Furthermore, this auxiliary diaphragm serves to seal the passage leading to the main diaphragm, and to thus protect the said main or metallic diaphragm against exposure to moisture or dust or the like which. may enter the horn.

A bracket-plate G is preferably secured to the back of the ring B, and a pair of electiomagnets H are secured upon this bracketplate. An armature mounting lI is provided at its end with an armature i, which latter is operated by the said electro-magnets. The contacts i, i2, operated by the said armature, serve to interrupt the flow efcurrent through the said electro-magnets, whereby the mechanisrn as a whole constitutes a buzzer for rapidly vibrating the reciprocating rod or tapper J. This electro-magnetically operated tapper J is supported in a bearing j, and also in an opening extending through the bracket-plate G, as shown more clearly in Fig. 8. A spring j is applied in such a manner as to tend normally to hold the forward endof the tapper out of engagement with the diaphragm C, and a s ring g2 assists the said spring j in keeping t e armature i in a normal or retractedposition. The flexible cui'- rent conductors or insulated circuit Wires K are led through an opening lc in the rear of the sheet-metal cap L, which latter is screwed upon the` ring B to inclose the electro-magmetal cap L for the purpose of uetic operating n'iechanisin. A clamping device `\l is secured to the side of the sheetsecuring the horn to any suitable support. When sufficient electric current is caused to 'flow through the electro-'magnets H, a rapid reciprocation of the diaphragm tapper results therefrmn, and the rapid vibration thus given the said main diaphragm C is communicated through the inclosed body of air to the auxiliary diaphragm E. This results, of course, in the est.al. lisli1nent of a rapid vibration of air in the resonator A, with the further result that the horn gives forth a lou-d and pleasing tone.

Thus it will be seen that l. provide :un improved and highly efficient electric horn, which can be easily taken apart and put together, which is adapted to produce a good ard clear tone, and which has its sound-producing'means fully protected against mois- .t ui e or dust or anything else of like character which might enter the mouth 'of the horn.

What l claim as my invention is:

1. An electric horn comprising a resonator, a coupling ring secured to the smaller end thereof, a diaphragm supporting rim scparably secured to said coupling ring, a pai: of diaphragme, separating means therebetween, and a tapper for rapidly beating one of said diaphragme.

i5. An electric horn comprising a resonator, a coupling ring secured to the smaller end thereof, a diaphragm'su'aporting rim separably secured to said coup ing ring and provided with a shoulder, a pair of diaphragms, separating means therebetween, one of said diaphragms abutting against said shoulder, and a bracket plate secured to the .back of said diaphragm and supporting ring,

a tapper for rapidly beating one of said diaphragms, and electro-magnetic` means l. for operating said tapper.

' provided with a shoulder, a

3. An electric horn comprising a resonator, a coupling ring secured to the smaller end thereof, a diaphragm supporting rim separably secured to said coup ing ring and air of diaphragms one of which is forme from metal and provided with a forcing plate, separating means between said diaphragme, said reinforced diaphragm abutting against said shoulder, and a tapper for rapidly beating the center of said reinforced dia hragin.

4. An e ectric horn comprising a resonator, a coupling ring secured to the smaller end thereof, a diaphragm supporting rim separably secured to said coupling ring and provided with a shoulder, a air of diaphragms one of which is forme from metal and provided with a centrally located reinforcing plate, scparating means between said diapliragms, said reinforced diaphragm abutting against said shoulder, a tapper for rapidly beating the. center of said reinforced diaphragm, and electromagnetic means for operating said tapper.

5. Anelectric horn comprising a lresonator, a coupling ring secured to the smaller end thereof, a diaphragm sup orting rim separablysecured to said coup ing ring an provided with a shoulder, a pair of diaphragrns one of which is formed from metal and provided with a centrally located reinforcing plate and the other comprising a mica plate, separating means between said saidreinforced diaphragm abutting against said shoulder, and a tapper for ra idly beating the center of said remforced iaphragm.

Signed by me this 25th day of J any. 1906.

DAVID P. PERRY.

Witnesses:

F. H. DRURY, S. LEWIS.

centrally located rei.n'

diaphragms, 

